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(parent: cb9a6aa) | patch
Fold (add x, shl(0 - y, n)) -> sub(x, shl(y, n)), to simplify some code
authorDan Gohman <gohman@apple.com>
Tue, 19 Jan 2010 23:30:49 +0000 (23:30 +0000)
committerDan Gohman <gohman@apple.com>
Tue, 19 Jan 2010 23:30:49 +0000 (23:30 +0000)
commitcd9e155755dab1913238ffc0374111a39d500adf
treedca492914248b99ff3fd5ddff75e3edf2ad66201tree | snapshot
parentcb9a6aab02f07cda005c7c078d8e4a3463017866commit | diff
Fold (add x, shl(0 - y, n)) -> sub(x, shl(y, n)), to simplify some code
that SCEVExpander can produce when running on behalf of LSR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93949 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp diff | blob | history
test/CodeGen/X86/neg-shl-add.ll [new file with mode: 0644] blob
external/llvm
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